Filling-detecting mechanism for looms.



W. RILEY.

FILLING DETECTING MECHANISM FOR LOOMS.

' APPLICATION FILED DEC.26, 1914.

1,172,834. Patented I eb.22,1916.

amunimmumu Wk l WiTnesses. Inventor.

WiHium Riley. 2 by %MM&W

AITys.

nnrrnn srnrns rnrnnr @FFTQE WILLIAM RILEY, OF READING, PENNSYLVANIA, ASSIGNOE TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF IVIAINE.

FILLING-DETECTING MECHANISM FOR LOOIVIS.

Specification of Letters Patent.

Patented Feb. 22, 1916.

Application filed December 26, 1914. Serial No. 879,011.

To all whom it may concern Be it known that I, WVILLIAM RILEY, a citizen of the United States, residing at Reading, county of Berks, State of Pennsylvania, have invented an Improvement in Filling-Detecting Mechanism for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters 011 the drawing representing like parts.

This invention relates more particularly to the mechanism in a loom for detecting the presence or absence of the filling as laid by the running shuttle, the detection of filling absence acting automatically to effect a change in the operation of the loom, and is more particularly related to that type of automatic loom in which double detecting devices are employed one at each side of the loom.

It is found, more particularly when the parts of the detecting mechanism have not been accuratelypositioned, that under certain conditions the detecting mechanism at the filling replenishing side of the loom will be given an abnormal movement or undue vibration by the filling and caused to effect a change in the operation of the loom when there is no absence or failure of the filling.

The object of the present invention is to guard against such improper action of the filling detecting mechanism which of course results in material loss of tion of the loom.

The nature and object of the invention will appear more fully from the accompanying description and drawings and will be pointed out in the appended claims.

The drawings show so much of an automatic filling replenishing loom of the double detector type as is necessary to an understanding of the present invention.

In the drawings, Figure l is a top plan view centrally broken out of a portion of a double detector filling replenishing. loom with one embodiment of the invention applied thereto; Fig. 2 is a left hand side elevation of one of the detecting devices with the nearer side of the fork slide broken out and with the parts in normal action; Fig. 3 is a view similar to Fig. 2 showing the parts with the feature of this invention acting after an abnormal movement of the detecting device.

. This type of loom being old and familiar time in the operait is unnecessary to describe in detail any thing more than those parts directly con cerned with the present invention. The usual filling feeder or hopper 1 carries the supply of filling carriers or bobbins 2 which are transferred by the transferrer 3 one by one to the running shuttle in well known manner, a rock shaft 4 controlling the operation of this mechanism.

Two filling detecting devices are shown designed normally to detect on alternate picks each device comprising a filling detector or fork 5, a slide 6 for each and a vibrator or weft hammer 7 one for each slide. hook'cooperating with its filling fork to effect a change in the operation of the loom upon the detection of filling absence by the filling fork, all in the usual and familiar manner.

Referring more particularly to Figs. 2 and 3 the filling fork 5 is shown as pivoted at 8 to its slide 6. If the filling is presented the fork is tilted on its pivot 8 swinging upwardly the looped tail 10. Hence as the hook l1 pivoted at 12 to the outer end of the vibrator 7 is carried back and comes forward it will not engage the looped tail 10 of the fork. If, however, the filling is absent the fork will not be tilted, and as the hook 11 swings backward and then comes forward the shoulder 13 of the hook will catch in the looped tail 10 of the fork and carry the fork slide back operating the controller shaft at and effecting transfer of a fresh filling carrier in the well known manner.

Under some conditions, particularly when the parts are not adjusted with accuracy, the filling fork will have an abnormal move ment. For example, in the case of the double detector loom shown immediately after the filling carrier is transferred to the running shuttle there will be an extra filling extended from the filling feeder in front of the detecting device at the transfer side of the loom. lVhen the filling fork comes forward it strikes this extra run of filling and is frequently thrown so violently or given such an abnormal movement that it rebounds in time to catch behind the shoulder 13 of the hook as the hook is moving forwardly. Hence, the loom is stopped or other change effected in the operation of the loom at a time when it is not desired.

By the present invention a guard arm 14 Each vibrator has pivoted thereto a is pivoted on the hook forward of the hook shoulder and normally has its free end eX- tending above and beyond the hook shoulder above, so that normally the tail 10 may slide beneath it and beyond so that upon rebound the tail will fall upon the guard rather than in front of the hook shoulder. This guard arm comprises a fiat metal plate pivoted at 15 on a bracket 16 fastened as by set screws 17 to the forward end of the hook. The construction of the bracket 16 is such as to limit the up and down movement of the guard arm and hold it as shown in Figs. 2 and 3, with its free end normally slightly above and to the rear of the hook shoulder 13.

In Fig. 2 the parts are shown acting normally. The tail 10 of the feeler sliding upon the upper surface or rest portion of the hook. If new upon rearward movement the filling is absent the fork will not be swung and the tail 10 will drop over the hook shoulder 13 and effect the stopping of the loom in the usual manner. If the filling be present and the hook given its normal swinging movement the tail 10 will slightly elevate the guard arm 1-1 and drop back to its normal position. If, however. some unusual condition occurs as the presence of two filling ends and the fork is given an abnormal movement it will swing upwardly and upon rebound will strike on top of the guard plate 14 as shown in Fig. 3, and thus be prevented from catching over the hook shoulder 13.

Having fully described my invention, what I claim as new and desireto secure by Letters Patent is:

1. In filling detecting mechanism for looms, the combination of a filling fork to engage and be moved by contact with the filling, a vibrator having a hook to cooperate with the fork upon detection of filling absence, and a guard arm pivoted on said hook forward of, and having its free end normally extending above and beyond, the hook shoulder whereby upon abnormal movement of the fork by the filling it will on rebound rest upon said guard arm until the hook has moved forwardly to carry the hook shoulder out of fork engaging position.

2. In filling detecting mechanism for looms, the combination of a filling fork to engage and be moved by contact with the filling, a vibrator having a hook to vibrate.

with the fork upon detection of filling absence and hook shoulder, guarding means acting to prevent the fork upon rebound, after abnormal filling induced movement, from engaging the hook shoulder and there by improperly effecting a change in the operation of the loom.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

THOMAS G. Ennrerrr, HOWARD KOCH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

